function  mysubmit()
{

  if(document.form1.SearchWord.value=="") {
    alert("检索表达式不能为空!");
    return false;
  }

  var flag1,flag;
  var rq = document.form1.SearchWord.value
  var flag = document.form1.select.value

  if (document.form1.select2==null) {
    flag1=5008;
  } else {
    flag1=document.form1.select2.value;
  }

  document.form1.action="http://202.109.75.198:8080/was40/search?channelid="+flag1+"&searchword="+flag+"="+rq;
}